I just got my blue belt (!!!!) and immediately after that happened while rolling people started attacking the !@#$ out of my legs. Which reminded me that I'd been sort of putting off learning how to defend anything other than a straight ankle lock since they're not legal in tournaments at white belt, so nobody really uses 'em on me. What can I watch (DVD, YouTube, etc.) to understand the fundamentals?

Also a blue belt. We don't train leg locks much either but I know I should at least start learning the defense to that stuff. Dean Lister just came out with a cool DVD but its probably stuff that's more advanced than blue belt.